Instrument used by the eye care professional to determine the intraocular or internal pressure of the eye See Free Eye Tests
— Tests eyes for increased intraocular pressure (glaucoma) (NEI) - Tests eyes to determine the fluid pressure inside the eye (intraocular pressure) (NERF) - An instrument for measuring the interior pressure of the eye
measuring instrument for measuring tension or pressure (especially for measuring intraocular pressure in testing for glaucoma)
an instrument which measures the pressure within the eye, either via a plastic prism held onto the surface of an anesthetized eye, or via a puff of air directed at the cornea